2102432444421 has 4 divisors (see below), whose sum is σ = 2803243259232. Its totient is φ = 1401621629612.

The previous prime is 2102432444407. The next prime is 2102432444459. The reversal of 2102432444421 is 1244442342012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2102432444421 - 2¹¹ = 2102432442373 is a prime.

It is a super-2 number, since 2×2102432444421² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102432444221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 350405407401 + ... + 350405407406.

It is an arithmetic number, because the mean of its divisors is an integer number (700810814808).

Almost surely, 2^{2102432444421} is an apocalyptic number.

It is an amenable number.

2102432444421 is a deficient number, since it is larger than the sum of its proper divisors (700810814811).

2102432444421 is an equidigital number, since it uses as much as digits as its factorization.

2102432444421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700810814810.

The product of its (nonzero) digits is 49152, while the sum is 33.

Adding to 2102432444421 its reverse (1244442342012), we get a palindrome (3346874786433).

The spelling of 2102432444421 in words is "two trillion, one hundred two billion, four hundred thirty-two million, four hundred forty-four thousand, four hundred twenty-one".